No boy is truly ugly, so if he is friendly and has nice personality, he is a gem that you would like for a friend, so of course you say hi back to him.
It means you are pretty and the kid that says you're ugly likes you... a lot.
It means he's insecure about his feelings.
It's possible that the girl is trying to re-establish communication with the boy by initiating the greeting. She may have missed the interaction and is now taking the initiative to say hi first. This change in behavior could indicate that she values the connection and wants to maintain it.
He's flirting.
the dude has a crush on you dhuu.... gofor him girl.
it means he is complementing you but is a little odd.
Continue living my life unchanged.
He really likes you
well i guess they are obviously nice!
i do not think so
It means the boy likes you that's what I'm gonna do with my friend.
It could mean that or he is just trying to be nice.